Home / 2,669.90-4,007.78-1,111.02

Finding the Fourth Proportional to 2,669.90, 4,007.78 and 1,111.02

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Solution

The fourth proportional to 2,669.90, 4,007.78 and 1,111.02 is: 1,667.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.90 : 4,007.78 = 1,111.02 : x
  2. Step 2: Convert to fraction form
    2,669.90/4,007.78 = 1,111.02/x
  3. Step 3: Cross multiply
    2,669.90x = 4,007.78 × 1,111.02
  4. Step 4: Simplify right side
    2,669.90x = 4,452,723.74
  5. Step 5: Solve for x
    x = 4,452,723.74/2,669.90
  6. Step 6: Final answer
    x = 1,667.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.